County annual report · FIPS 25005
2019 Bristol County, MA Power Outage Report
In 2019, customers in Bristol County, MA went without power for an average of 1.3 hours, a total of 373K customer-hours (Massachusetts average 3.0 hours). That ranks 13th worst of 14 Massachusetts counties and 2367th of 2,945 nationally.
Compared with MA, the US and 2018
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Bristol County, 2019
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | June 17, 2019 11:15 | June 17, 2019 12:45 | 1h 30m | 12,421 | 3,665 |
| 2 | May 1, 2019 17:00 | May 1, 2019 18:00 | 1h | 10,403 | 6,274 |
| 3 | October 17, 2019 02:15 | October 19, 2019 23:45 | 2d 21h | 9,909 | 61K |
| 4 | June 11, 2019 04:00 | June 11, 2019 04:30 | 30m | 9,469 | 4,734 |
| 5 | April 15, 2019 11:15 | April 15, 2019 23:30 | 12h 15m | 8,048 | 11K |
| 6 | March 2, 2019 15:00 | March 2, 2019 15:45 | 45m | 7,368 | 3,685 |
| 7 | October 31, 2019 23:30 | November 2, 2019 17:00 | 1d 17h | 6,129 | 41K |
| 8 | August 4, 2019 14:15 | August 6, 2019 01:00 | 1d 10h | 6,003 | 40K |
| 9 | February 25, 2019 15:30 | February 27, 2019 04:30 | 1d 13h | 5,911 | 31K |
| 10 | March 22, 2019 14:45 | March 22, 2019 23:30 | 8h 45m | 5,574 | 7,779 |
Outage episodes by size in 2019: 135 reached 100+ customers, 36 reached 1,000+ customers, 2 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Bristol County reported on EIA Form 861 for 2019, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Massachusetts Electric Co | 2014 | 2.4 hrs | 1.12 | 1.6 hrs | 0.96 |
| NSTAR Electric Company | 2018 | 16.2 hrs | 1.68 | 85 min | 0.83 |
| City of Taunton | 2018 | 4.5 hrs | 5.10 | 81 min | 2.66 |
| Town of Mansfield - (MA) | 2018 | 12 min | 0.17 | 6 min | 0.07 |
| Town of North Attleborough - (MA) | 2018 | 4.5 hrs | 0.67 | 12 min | 0.16 |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about 89% of Massachusetts's customers in 2019; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 284,254 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Bristol County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Bristol County, MA annual power outage report, 2019, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2019/massachusetts/bristol-county